CA2246535A1 - Systeme et procede de communication a acces multiple mettant en oeuvre la difference de code et la repartition dans le temps - Google Patents

Systeme et procede de communication a acces multiple mettant en oeuvre la difference de code et la repartition dans le temps

Info

Publication number
CA2246535A1
CA2246535A1 CA002246535A CA2246535A CA2246535A1 CA 2246535 A1 CA2246535 A1 CA 2246535A1 CA 002246535 A CA002246535 A CA 002246535A CA 2246535 A CA2246535 A CA 2246535A CA 2246535 A1 CA2246535 A1 CA 2246535A1
Authority
CA
Canada
Prior art keywords
multiple access
cdma
communications system
time division
codewords
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002246535A
Other languages
English (en)
Other versions
CA2246535C (fr
Inventor
Paul W. Dent
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ericsson Inc
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2246535A1 publication Critical patent/CA2246535A1/fr
Application granted granted Critical
Publication of CA2246535C publication Critical patent/CA2246535C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/10—Code generation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2618—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using hybrid code-time division multiple access [CDMA-TDMA]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/54—Circuits using the same frequency for two directions of communication
    • H04B1/56—Circuits using the same frequency for two directions of communication with provision for simultaneous communication in two directions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2201/00—Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
    • H04B2201/69—Orthogonal indexing scheme relating to spread spectrum techniques in general
    • H04B2201/707—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
    • H04B2201/7097—Direct sequence modulation interference
    • H04B2201/709727—GRAKE type RAKE receivers

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

Ce système et ce procédé de communication à accès multiple mettant en oeuvre un accès multiple par différence de code (CDMA) et un accès multiple par répartition dans le temps (TDMA) consistent à coder des signaux d'informations à l'aide de mots de code CDMA à transmettre sur un spectre commun de fréquences, à comprimer en temps les mots de code CDMA, afin de transmettre ceux-ci seulement pendant des tranches de temps allouées, à activer un récepteur seulement durant ces tranches de temps, afin de recevoir et décomprimer les mots de code CDMA, puis à décoder les mots de code CDMA décomprimés, afin de récupérer les signaux d'informations.
CA002246535A 1996-02-29 1997-02-20 Systeme et procede de communication a acces multiple mettant en oeuvre la difference de code et la repartition dans le temps Expired - Fee Related CA2246535C (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/608,811 1996-02-29
US08/608,811 US5894473A (en) 1996-02-29 1996-02-29 Multiple access communications system and method using code and time division
PCT/US1997/002615 WO1997032413A1 (fr) 1996-02-29 1997-02-20 Systeme et procede de communication a acces multiple mettant en oeuvre la difference de code et la repartition dans le temps

Publications (2)

Publication Number Publication Date
CA2246535A1 true CA2246535A1 (fr) 1997-09-04
CA2246535C CA2246535C (fr) 2003-02-11

Family

ID=24438110

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002246535A Expired - Fee Related CA2246535C (fr) 1996-02-29 1997-02-20 Systeme et procede de communication a acces multiple mettant en oeuvre la difference de code et la repartition dans le temps

Country Status (11)

Country Link
US (1) US5894473A (fr)
EP (1) EP0883941B1 (fr)
JP (1) JP3920345B2 (fr)
KR (1) KR100429961B1 (fr)
CN (1) CN1087534C (fr)
AU (1) AU716097B2 (fr)
BR (1) BR9707891A (fr)
CA (1) CA2246535C (fr)
DE (1) DE69732097T2 (fr)
ID (1) ID17697A (fr)
WO (1) WO1997032413A1 (fr)

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DE69732097T2 (de) 2005-06-02
JP3920345B2 (ja) 2007-05-30
DE69732097D1 (de) 2005-02-03
BR9707891A (pt) 1999-07-27
CN1217111A (zh) 1999-05-19
CN1087534C (zh) 2002-07-10
JP2000505629A (ja) 2000-05-09
EP0883941A1 (fr) 1998-12-16
WO1997032413A1 (fr) 1997-09-04
ID17697A (id) 1998-01-22
US5894473A (en) 1999-04-13
AU1963897A (en) 1997-09-16
KR19990087377A (ko) 1999-12-27
CA2246535C (fr) 2003-02-11
AU716097B2 (en) 2000-02-17
KR100429961B1 (ko) 2004-06-16
EP0883941B1 (fr) 2004-12-29

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